shapes (version 1.2.8)

T1mice: T1 mouse vertabrae data

Description

T1 mouse vertebrae data - 4 landmarks in 2 dimensions, in 3 groups (30 Control, 26 Large, 29 Small mice). The 4 landmarks are obtained using a semi-automatic method at points of high curvature. This particular strain of mice is the `QE' strain.

Usage

data(T1mice)

Format

mice$x : An array of dimension 4 x 2 x 85 of the two dimensional co-ordinates of 4 landmarks for each of the 85 mice.

mice$group : Group labels. "c" Control, "l" Large, "s" Small mice

References

Mardia, K. V. and Dryden, I. L. (1989). The statistical analysis of shape data. Biometrika, 76, 271-281.

Data from Paul O'Higgins (Hull-York Medical School) and David Johnson (Leeds)

Examples

data(T1mice)
plotshapes(T1mice$x,symbol=as.character(T1mice$group),joinline=c(1,4,2,3,1))